Browsing Vitenskapelige publikasjoner (TN-IEP) by Title
Now showing items 71-90 of 224
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The Effect of Different Drilling Fluids on Mechanical Friction
(Peer reviewed; Journal article, 2017)A very important aspect in highly inclined wellbores is the mechanical friction. For extended reach drilling (ERD) and through tubing extended reach drilling (TTERD) this can be a limiting factor. Friction caused by the ... -
Effect of Iron Oxide Nanoparticles on the Properties of Water-Based Drilling Fluids
(Peer reviewed; Journal article, 2020-12)In recent years, several studies have indicated the impact of nanoparticles (NPs) on various properties (such as viscosity and fluid loss) of conventional drilling fluids. Our previous study with commercial iron oxide NPs ... -
The Effect of Lost Circulation Material on Herschel-Bulkley Parameters
(Peer reviewed; Journal article, 2023)To hinder loss of drilling fluids into downhole formations while drilling geothermal, CO2 injection or petroleum wells, Lost Circulation Material (LCM) is added to the drilling fluids. These materials consist of many ... -
Effect of Organic Retarders on Fluid-State and Strength Development of Rock-Based Geopolymer
(Chapter, 2023)Granite waste is rich in aluminum and silicate has the potential of turning to geopolymer material after mixing with an alkali solution. One of the challenges in developing a geopolymer is to select a suitable retarder to ... -
The effect of PVA microfiber reinforcement on the mechanical and rheological behavior of class G oil well cement pastes
(Peer reviewed; Journal article, 2023)During the life cycle of an oil well, the annular cement sheath will be exposed to load combinations that can result in failure. To enhance the structural integrity and ductility of the cement paste, and to improve the ... -
Effect of salinity on silica nanoparticle adsorption kinetics and mechanisms for fluid/rock interaction with calcite
(Peer reviewed; Journal article, 2019-02)This study addresses the kinetics of silica nanoparticle adsorption on calcite from a solution at three salinities: deionized water (DIW), synthetic seawater (SSW), and low salinity water (LSW). The nanoparticle adsorption ... -
Effect of Salts on Interfacial Tension and CO2 Mass Transfer in Carbonated Water Injection
(Journal article; Peer reviewed, 2019-02)Carbonated water injection (CWI) is a promising enhanced oil recovery (EOR) and CO2 sequestration method, which overcomes the problems associated with CO2 EOR. CO2 mass transfer and interfacial tension (IFT) are important ... -
Effect of Silica nanoparticles on fluid/rock interactions during low salinity water flooding of chalk reservoirs
(Journal article; Peer reviewed, 2018-07)Abstract: The main objective of this work is to address the adsorption of Silica nanoparticles (NPs) dispersed in different brines on chalk surfaces and their effect on fluid/rock interaction. Isothermal static and dynamic ... -
The effect of temperature on CO2 injectivity in sandstone reservoirs
(Peer reviewed; Journal article, 2022)Carbon Capture, Utilization and Storage (CCUS) is a pragmatic technology that could reduce anthropogenic CO2 and halt climate change. CO2 injectivity is affected by several physicochemical interactions around the injection ... -
Effect of Zn2+ and K+ as Retarding Agents on Rock-Based Geopolymers for Downhole Cementing Operations
(Peer reviewed; Journal article, 2022)Geopolymer material has a potential to function alongside Portland Cement as an efficient cementitious material for well cementing and plug and abandonment applications. Geopolymer material requires retarding agents to be ... -
Effects of confinement pressure on the mechanical behavior of an oil well cement paste
(Peer reviewed; Journal article, 2021-11)Oil well cement paste is a key structural component in wells that should provide mechanical support to the casing and prevent uncontrolled flow of formation fluids along the wellbore and to the environment. Since the annular ... -
Effects of polymer adsorption on the effective viscosity in microchannel flows: phenomenological slip layer model from molecular simulations
(Journal article; Peer reviewed, 2018-10)Molecular simulations (Dissipative Particle Dynamics - DPD) were used to quantify the effect of polymer adsorption on the effective shear viscosity of a semi-dilute polymer solution in microchannel Poseuille flow. It is ... -
Efficient Electrochemical Reduction of CO2 to CO by Ag-Decorated B-Doped g-C3N4: A Combined Theoretical and Experimental Study
(Peer reviewed; Journal article, 2022)Electrochemical CO2 reduction (ECR) has received great attention in energy conversion and CO2 mitigation. In recent years, graphitic carbon nitride (g-C3N4) has been regarded as a very promising support for metal nanoparticles ... -
Efficient Removal of Magnetic Contamination from Drilling Fluids – The Effect on Directional Drilling
(Peer reviewed; Journal article, 2020-10)Magnetic debris in a drilling fluid have a significant influence on the ability of the drilling fluid to maintain its function. Down hole logging can suffer from poor signal to noise ratios. Directional drilling in areas ... -
Efficient Removal of Magnetic Contamination from Drilling Fluids – The Effect on Directional Drilling
(Peer reviewed; Journal article, 2021)Magnetic debris in a drilling fluid have a significant influence on the ability of the drilling fluid to maintain its function. Down hole logging can suffer from poor signal to noise ratios. Directional drilling in areas ... -
Emission Mitigation and Energy Security Trade-Off: Role of Natural Gas in the Indian Power Sector
(Peer reviewed; Journal article, 2021-06)India’s Nationally Determined Contributions (NDC) aim to increase the share of non-fossil fuel, especially renewables, in power generation. But at the same time, it mentions that coal is likely to dominate the power ... -
Enabling Increased Delithiation Rates in Silicon-Based Anodes through Alloying with Phosphorus
(Peer reviewed; Journal article, 2022)The capability of battery materials to deliver not only high lithium storage capacity, but also the ability to operate at high charge/discharge rates is an essential property for development of new batteries. In the present ... -
Energy, exergy and environmental analysis of a novel combined system producing power, water and Hydrogen
(Peer reviewed; Journal article, 2017)During last years, absorption heat transformers have been used widely for boosting low-grade heat sources. In this paper, a novel multi-generation system including an open absorption heat transformer (OAHT), an organic ... -
Estimation of shear rate change in vertically oscillating non-Newtonian fluids: Predictions on particle settling
(Peer reviewed; Journal article, 2020)This study investigates the effect of oscillatory motion on velocity and shear rate change within different non-Newtonian, slightly viscoelastic fluids oscillated in a vertical U-shaped circular pipe. An estimation to ... -
Experimental and theoretical investigation of the mechanisms of drying during CO2 injection into saline reservoirs
(Peer reviewed; Journal article, 2023)A viable CO2 storage resource must have sufficient storage capacity, reliable containment efficiency and adequate well injectivity. Deep saline formations stand out in terms of storage capacity and containment efficiency. ...